def test_iter_tsv(self):
path = tempfile.mktemp()
with open(path, 'wb') as handle:
write_tsv(handle, 'A', 'B', 'C')
with open(path, 'rb') as handle:
row = next(iter_tsv(handle))
self.assertEqual(3, len(row))
with open(path, 'rb') as handle:
row = next(iter_tsv(handle, cols=('a', 'b', 'c')))
self.assertEqual(3, len(row))
self.assertEqual(row.a, 'A')
self.assertEqual(row.b, 'B')
self.assertEqual(row.c, 'C')
with open(path, 'rb') as handle:
exception_raised = False
try:
row = next(iter_tsv(handle, cols=('a', 'b')))
except TypeError:
exception_raised = True
self.assertTrue(exception_raised)
with open(path, 'rb') as handle:
row = next(iter_tsv(handle, cols=('a', 0, 0)))
self.assertEqual(3, len(row))
self.assertEqual(row.a, 'A')
self.assertFalse(hasattr(row, 'b'))
self.assertFalse(hasattr(row, 'c'))
with open(path, 'rb') as handle:
row = next(iter_tsv(handle, cols=('X', 'b', 'X')))
self.assertEqual(3, len(row))
self.assertEqual(row.b, 'B')
self.assertFalse(hasattr(row, 'a'))
self.assertFalse(hasattr(row, 'c'))
def test_iter_tsv(self):
path = tempfile.mktemp()
with open(path, 'w') as handle:
write_tsv(handle, 'A', 'B', 'C')
with open(path) as handle:
row = iter_tsv(handle).next()
self.assertEqual(3, len(row))
with open(path) as handle:
row = iter_tsv(handle, cols=('a', 'b', 'c')).next()
self.assertEqual(3, len(row))
self.assertEqual(row.a, 'A')
self.assertEqual(row.b, 'B')
self.assertEqual(row.c, 'C')
with open(path) as handle:
exception_raised = False
try:
row = iter_tsv(handle, cols=('a', 'b')).next()
except TypeError:
exception_raised = True
self.assertTrue(exception_raised)
with open(path) as handle:
row = iter_tsv(handle, cols=('a', 0, 0)).next()
self.assertEqual(3, len(row))
self.assertEqual(row.a, 'A')
self.assertFalse(hasattr(row, 'b'))
self.assertFalse(hasattr(row, 'c'))
with open(path) as handle:
row = iter_tsv(handle, cols=('X', 'b', 'X')).next()
self.assertEqual(3, len(row))
self.assertEqual(row.b, 'B')
self.assertFalse(hasattr(row, 'a'))
self.assertFalse(hasattr(row, 'c'))
def test_write_tsv(self):
path = tempfile.mktemp()
with open(path, 'wb') as handle:
write_tsv(handle, 'A', 'B', 'C')
with open(path, 'rb') as handle:
self.assertEqual(b'A\tB\tC\n', handle.read())
def test_write_tsv(self):
path = tempfile.mktemp()
with open(path, 'w') as handle:
write_tsv(handle, 'A', 'B', 'C')
with open(path) as handle:
self.assertEqual('A\tB\tC\n', handle.read())